Anyone used Clear & Simple Tests??

Hey guys! I've been searching everywhere for reviews on the 'Clear & Simple' tests but all I found was that the digital versions have shocking reviews!! Clear & Simple do an early response (6 days early) which you can find in Home Bargains for 99p, and I've found NO reviews for these. I'm just wondering if anyone has actually used this and is it any good??
I mean 99p? It's hard to believe they will detect 5 days before AF due when clear blue's test is like £8 for the same test.

Any help would be appreciated ♡